Terrestrial sampling options

In this file, the goal is to:

  1. Examine the environmental coverage available within focal sites
  2. Attempt to subdivide those focal sites into clusters for representative sampling

Sampling options

Figure 1. The full domain (light grey), available study sites (dark grey), and focal study sites (red).

Figure 1. The full domain (light grey), available study sites (dark grey), and focal study sites (red).

Focal sites

Focal study sites have been selected on the basis of the following criteria:

Clustering

To better stratify our sampling, we’ll use k-means clustering to divide up the cells within the domain into clusters.

The variables going into the clustering are:

Here I’m using k-means clustering to divide the data into 20 clusters. The number 20 was chosen entirely arbitrarily.

Visualizing our clusters

Geographic space

Figure 2. Spatial distribution of clusters. Polygons denote focal sampling locations.

Figure 2. Spatial distribution of clusters. Polygons denote focal sampling locations.

Figure 3. Distribution of clusters across the domain (grey) and focal regions (blue).

Figure 3. Distribution of clusters across the domain (grey) and focal regions (blue).

Environmental space

Figure 4. Mean Annual Temperature vs. Mean Annual Precipitation.  Colored dots represent clusters in the focal sites and grey areas represent the entire domain.

Figure 4. Mean Annual Temperature vs. Mean Annual Precipitation. Colored dots represent clusters in the focal sites and grey areas represent the entire domain.

Figure 5. Precipitation Seasonality vs. Soil Depth.  Colored dots represent clusters in the focal sites and grey areas represent the entire domain.

Figure 5. Precipitation Seasonality vs. Soil Depth. Colored dots represent clusters in the focal sites and grey areas represent the entire domain.

Figure 6. Precipitation vs. Drought.  Colored dots represent clusters in the focal sites and grey areas represent the entire domain.

Figure 6. Precipitation vs. Drought. Colored dots represent clusters in the focal sites and grey areas represent the entire domain.

Vegetation Types

Figure 7. Distribution of biomes across the domain (grey) and focal regions (blue)

Figure 7. Distribution of biomes across the domain (grey) and focal regions (blue)

Interactive map

The map below is interactive and allows zooming, moving, and toggling layers on/off.

Figure 8. Sampling options within parks. Park boundaries are denoted by black lines, sampling locations are colored by cluster. Additional polygons delimited current flight plans (white) and areas of interest indicated by BIOSCAPE PIs (brown).